|
Tutors Answer Your Questions about Matrices-and-determiminant (FREE)
Question 109062: A bald eagle snatches a fish from a lake and flies to an altitude of 256 ft. The fish manages to squirm free and falls back down into the lake. Its height h in feet can be modeled by h(t)= 256-16 t squared, where t is the time in seconds. How many seconds will the fish fall before hitting the water?
Click here to see answer by stanbon(57203)  |
Question 110060: ther's this theory of fermat which i don't understand something about it x(exp n)+y(exp n)=z(exp n)....was the aim out of it is to find constant numbers x.y.z so that the equation is true no matter what n from N....
and if that's true.did ernest commer prove it exept for some numbers and then it was proved totaly by andrew wiles
Click here to see answer by stanbon(57203) |
Question 111585: Janet can wax her car in 8 hours. When she works together with Darlene, they can wax the car in 30 minutes. How long would it take Darlene, working by herself, to wax the car?
Is it the same as this: If J=8 and D+J= 1/2 D is equal to what? I know the answer 8/15 hours i dont know how it is got
I dont know what topic is it?
Thank You very much
Click here to see answer by josmiceli(9645)  |
Question 112443: I had a word problem on a test involving Matrices, determinants and Cramer's Rule. I looked through all of my notes, and did not see anything on word problems and the text book was very vague. My professor created the test himself. We were to use a system to solve this word problem:
A boat on a river travels downstream between two points, 20 miles apart, in one hour. The return trip against the current takes 2.5 hours. What is the speed of the current of the river?
My Answer:
x - 20y = 1
x + 20y = 2.5
Using elimination of the y-term 2x = 3.5
x = 3.5/2
Click here to see answer by Fombitz(13828)  |
Question 112443: I had a word problem on a test involving Matrices, determinants and Cramer's Rule. I looked through all of my notes, and did not see anything on word problems and the text book was very vague. My professor created the test himself. We were to use a system to solve this word problem:
A boat on a river travels downstream between two points, 20 miles apart, in one hour. The return trip against the current takes 2.5 hours. What is the speed of the current of the river?
My Answer:
x - 20y = 1
x + 20y = 2.5
Using elimination of the y-term 2x = 3.5
x = 3.5/2
Click here to see answer by bucky(2189) |
Question 114419: y=0.00143x^4+0.00166x^3-0.236x^2+1.3x+0.739. Use a graphing calculator to fine tune this equation. where do you start and what am i supposed to do?
I am a middle school algebra teacher trying to update my math skills. It has been awhile since I worked with algebra 2.hope someone can help me. thanks
Click here to see answer by stanbon(57203) |
Question 114759: Could you please help me out on this one?
Ron ateends a party. He wants to limit his food intake to 103g protein, 93g fat, and 135g carbohydrate. The mushroom caps at the party have 3g protein, 5g fat, and 9g carbs, the meatballs have 14g protein, 7g fat, and 15g carbs, and the deviled eggs have 13g protein, 15g fat, and 6g carbs.How many of each snack can he eat to obtain his goal?
Click here to see answer by stanbon(57203) |
Question 116354: cantrell associastes a real estate developer is planning to build a new apartment complex consisting of one -bedroom aunits and two -and three - bedroom townhouses. a total of 192 units are planned and the number of family units two and three bedroom townhouses will equal the number of one bedroom units. If the number of one bedroom units will be 3 times the number of three bedroom units find how many units of each type will be in the complex
Click here to see answer by ankor@dixie-net.com(15622)  |
Question 116994: I really didn't know where to submit this question but I have been working on it for sometime and I'm not even sure how to get 2 equations by eliminating a variable. Should you in every circumsatnce of solving linear systems, attempt to first eliminate the x variable? Please help!
solve the linear system without using matrices or determinants
2x-2y+z=-7
3x+y+2z=-2
5x+3y-3z=-7
Click here to see answer by jim_thompson5910(28476) |
|
Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935
|
| |
